Fallen Monk Kokugo

[LV1-LV2] When Summoned

Removed all but one core from each of your opponent's spirits with only one color and place them into their reserve.

[Chain: White] (If you have a white symbol, also activate the following effect.)

Select one of your opponent's spirits with 6000 or fewer BP and return it to their hand.

[Chain: Red]

Your opponent selects one of their nexuses. Destroy it.